Ignition electrode suitable for multiple radiant tube burners

Abstract

The invention relates to an ignition electrode suitable for multiple radiant tube burners. An electrode wire passes through an ignition head and is fixed with the ignition head, an ignition tripod is fixedly arranged at the right end of an electrode tube, and an insulated ceramic tube passes through a circular through hole in the center of the ignition tripod and is positioned and fixed; an electrode catheter is arranged outside the electrode tube, and the right end of the electrode catheter is connected with an electrode mounting hole in a burner combustion chamber; the right end of an electrode mounting joint is connected with a connector, and an electrode head is arranged at the left end of the electrode mounting joint; the left end of the electrode catheter is connected with one horizontal end of a cooling air sleeve of a three-way structure; and the other horizontal end of the cooling air sleeve is connected with the connector, and the cooling air port of the cooling air sleeve in the vertical direction is communicated with a ring seam between the electrode catheter and the electrode tube. The single electrode realizes automatic ignition and flame monitoring functions, and is suitable for multiple radiant tube burners; the ignition electrode wire is insulated and encircled in the whole travel, so that ignition of side walls and surface oxidation of the electrode wire are effectively avoided; and the cooling air effectively reduces the temperatures of the electrode ignition head and the tripod, so that the service life of the electrode is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of burner ignition devices, in particular to a device applied to radiant tubes capable of igniting various radiant tube burners. Background technique [0002] In the field of continuous heat treatment of strip steel, in order to realize non-oxidative heating or controlled atmosphere heating of strip steel in the furnace, gas radiant tubes have been more and more widely used. There are several types of radiant tubes commonly used, such as I type, U type, W type, and P type, and each type of radiant tube has its own different performance parameters and scope of application. The radiant tube burner is usually used as a heating device in conjunction with the radiant tube. Generally, the radiant tube burner consists of two parts: the main burner part is used as a burner to ignite, mix and organize the combustion flame with the air gas; The sensible heat of the flue gas at the tail is recovered to preheat the com...

AI Technical Summary

Problems solved by technology

Although this method can normally ignite the radiant tube burner, there are many problems such as unstable flame monitoring and easy loss of electrodes during use.

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